"Atlantic City would be a dubious model for Sydney and in our judgement, the Trump Mafia connections should exclude the Kern/Trump consortium," the Police Board said in report dated April 3, 1987.

The documents were part of Cabinet deliberations over the bid, which were released on Thursday under laws which make Government documents public after 30 years.

Ron Galella via Getty Images
onald Trump, Don King and Barbara Walters attend 'The Art of the Deal' Book Party on December 12, 1987 at Trump Tower in New York City.

The Police Board was tasked with certifying "on the grounds of sound repute, probity and integrity" which of four tenderers should be recommended to lead the proposed inner-city Darling Harbour project.

NSW Cabinet
The Police Board's assessment of the Trump/Kern bid for the Casino.

NSW Government
The assessment of the Canadian Imperial Bank of Commerce Australia

The documents also show extracts from a report stating the Kern/Trump proposal's financial structure was "reasonably based".

"However, the projected casino revenue estimates are not soundly based and the quantum of the ­potential overstatement is so mat­erial that the tender is not financially viable," the report by Canadian Imperial Bank of Commerce Australia said.

"Also, the tender is not fin­ancially viable on the basis of expected returns to equity investors."

Xinhua News Agency/Getty Images
30 years after his consortium's failed Casino bid in Sydney, Donald Trump was elected 45th president of the United States.

A major critic of the proposal at the time, Reverend Fred Nile, described the process for The Guardian as a "disaster".

Rev. Nile, who still sits in the NSW parliament, pushed for the NSW government to scrap the casino entirely after he raised concerns about possible organised crime links with the planned casino.